Thread overview
File .. byLine
Dec 03
Joel
Dec 03
Joel
December 03
I can't seem to get this to work!

```
foreach(line; File("help.txt").byLine) {
    writeln(line.stripLeft);
```

With the code above, I get this compile error:
source/app.d(360,36): Error: template std.algorithm.mutation.stripLeft cannot deduce function from argument types !()(char[]), candidates are:
/usr/local/opt/dmd/include/dlang/dmd/std/algorithm/mutation.d(2602,7):        std.algorithm.mutation.stripLeft(Range, E)(Range range, E element) if (isInputRange!Range && is(typeof(range.front == element) : bool))
/usr/local/opt/dmd/include/dlang/dmd/std/algorithm/mutation.d(2610,7):        std.algorithm.mutation.stripLeft(alias pred, Range)(Range range) if (isInputRange!Range && is(typeof(pred(range.front)) : bool))

I just want to use each 'line' variable as a string?! I've tried 'byLineCopy', and 'line.to!string'. I've looked at documentation.
December 03
On Monday, 3 December 2018 at 06:09:21 UTC, Joel wrote:
> I can't seem to get this to work!
>
> ```
> foreach(line; File("help.txt").byLine) {
>     writeln(line.stripLeft);
> ```
>
> With the code above, I get this compile error:
> source/app.d(360,36): Error: template std.algorithm.mutation.stripLeft cannot deduce function from argument types !()(char[]), candidates are:
> /usr/local/opt/dmd/include/dlang/dmd/std/algorithm/mutation.d(2602,7):        std.algorithm.mutation.stripLeft(Range, E)(Range range, E element) if (isInputRange!Range && is(typeof(range.front == element) : bool))
> /usr/local/opt/dmd/include/dlang/dmd/std/algorithm/mutation.d(2610,7):        std.algorithm.mutation.stripLeft(alias pred, Range)(Range range) if (isInputRange!Range && is(typeof(pred(range.front)) : bool))
>
> I just want to use each 'line' variable as a string?! I've tried 'byLineCopy', and 'line.to!string'. I've looked at documentation.

https://run.dlang.io/is/h0ArAB

works for me. If you want it as a string not  char[] then byLineCopy should work, if not just `.idup` `line`.
December 03
On Monday, 3 December 2018 at 06:55:50 UTC, Nicholas Wilson wrote:
> On Monday, 3 December 2018 at 06:09:21 UTC, Joel wrote:
>> [...]
>
> https://run.dlang.io/is/h0ArAB
>
> works for me. If you want it as a string not  char[] then byLineCopy should work, if not just `.idup` `line`.

Oh, I was using std.algorithm's 'stripLeft' instead of std.string's 'stripLeft'.
December 03
On 12/3/18 2:03 AM, Joel wrote:
> On Monday, 3 December 2018 at 06:55:50 UTC, Nicholas Wilson wrote:
>> On Monday, 3 December 2018 at 06:09:21 UTC, Joel wrote:
>>> [...]
>>
>> https://run.dlang.io/is/h0ArAB
>>
>> works for me. If you want it as a string not  char[] then byLineCopy should work, if not just `.idup` `line`.
> 
> Oh, I was using std.algorithm's 'stripLeft' instead of std.string's 'stripLeft'.

Interesting. I can see the reason too -- there is no "should be stripped" property for all types, just character types (is it a space).

-Steve